3-15
3. Y/C CIRCUIT
(4) When the Video signal doesn’t appear on the screen in REC Mode,
Is the EE signal normal?
Is 5.2VT/5.4VA applied to the
IC301 Pins 24,42,55,72,91?
Does the RF signal appear
at the IC301 Pin 78?
Check EE Mode.
Check the System of REC
‘H’. (the IC501 Pin 47
/ the D301)
Replace the IC301.
Check the line of the 5.2VT/
5.4VA Line.(Power Circuit)
Check PB Mode.
Is the REC ‘H’ signal
(about 4V) applied to the
IC301 Pin 80?
Check the circuit of the
IC301 Pins 85, 86.
Check REC Luminance
Pass & Color Pass.
Does PB Mdoe operate
normally?
Does the REC RF signal
appear at the IC301
Pins 88,89,94,95?
Check the Drum &
Drum Connector
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
To Next Page
Loading...
